On Sun, 2009-06-14 at 15:09 -0300, Isaac Marino Bavaresco wrote:
> It takes much less than half the charge of the battery to start the engine.
> Usually you can start the engine lots of times in a short period without
> time for recharging.

Perhaps, in the best of conditions. 

That said, cars are in pretty horrible environments. I guarantee that a
car battery in -30C weather will not do a very good job of starting the
engine with a similar charge level.

Unfortunately there are simply too many variables at play here. A big
one in todays cars is what the cars drain on the battery is just sitting
there, it can be surprisingly high with some cars.

TTYL

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